Yes,You can add the following code to do that.

add_filter('woocommerce_package_rates', 'wp_wiki_woocommerce_tiered_shipping', 10, 2);
function wp_wiki_woocommerce_tiered_shipping($rates, $package)
{
	$user = wp_get_current_user();
	if ($user->user_email == 'test@email.com') {
		$free = array();
		foreach ($rates as $rate_id => $rate) {
			if ('free_shipping' === $rate->method_id) {
				$free[$rate_id] = $rate;
				break;
			}
		}
		return $free;
	} else {
		foreach ($rates as $rate_id => $rate) {
			if ('free_shipping' === $rate->method_id) {
				unset($rates[$rate_id]);
				break;
			}
		}
		return $rates;
	}
}

By default WooCommerce is not providing a URL to remove items in cart. If you want to create a custom URL for clear cart try this code in functions.php

add_action('init', 'woocommerce_clear_cart');
function woocommerce_clear_cart() {
    if(isset($_GET['clear-cart'])) {
        global $woocommerce;
        $woocommerce->cart->empty_cart();
    }
}

This will allow you to remove cart item by running this URL https://yourwebsite.com/?clear-cart=true

To create a custom database table in WordPress when activating a plugin, add the following code in plugin file.

register_activation_hook(__FILE__, 'create_custom_table');

function create_custom_table()
{
    global $wpdb;
    $table_name = $wpdb->prefix . 'custom_table';
    $charset_collate = $wpdb->get_charset_collate();
    $sql = "CREATE TABLE $table_name (
        id int(11) NOT NULL AUTO_INCREMENT,
        column1 varchar(255) NOT NULL,
        column2 text NOT NULL,
        PRIMARY KEY  (id)
    ) $charset_collate;";
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);
}


Note:

• register_activation_hook function will be triggered when plugin is activated
• The dbDelta function is used to create the table.
• Make sure to replace custom_table with your desired table name, and column1 and column2 with your desired column names.

To enqueue custom JavaScript in WordPress, you can use wp_enqueue_script function. Add your JavaScript file in child theme folder. Lets “custom-script.js” is your file, and it is located in “child-theme/js’ folder, then add the following code in functions.php to enqueue your script.

function function custom_scripts()
{
    wp_enqueue_script('custom-script', get_stylesheet_directory_uri() . '/js/custom-script.js', array('jquery'), '1.0', true);
}
add_action('wp_enqueue_scripts', 'custom_scripts');

1. custom-script: The handle for the script, which is used as a unique identifier.

2. get_stylesheet_directory_uri() . '/js/custom-script.js': The URL of the script file.

3. array( 'jquery' ): An array of dependencies. If the script not depends on jQuery, then you leave it as empty array( '' ).

4. 1.0: The version number of the script.

5. true: Whether to load the script in the footer (true) or the header (false).